Apparatus for supplying combustible liquid under pressure to burners.



No. 683,8l9. Patented Oct. I, t90l. -L. VAN 'DYCK.

APPARATUS FOR SUPPLYlNG COMBUSTIBLE LIQUID UNDER PRESSURE T0 BURNEBS,

(Applicafion filqd Dec. 24, 1597.

No Model.)

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UNMED STATES ,ATENT Fries.

LEON VAN DYOK, OF BRUSSELS, BELGIUM, ASSIGNOR TO THE COMPAGNIECONTINENTALE DINOANDESCENOE ET DE OHAUFFAGE, (SYSTEMES FRANK &POITRIMOL,) OF SAME PLACE.

APPARATUS FOR SUPPLYING COMBUSTIBLE LIQUID UNDER PRESSURE TO BURNERS.

SPECIFICATION forming part of Letters Patent No. 683,819, dated October1, 1901.

Application filed December 24, 1897. Serial No. 663,353. (No model.)

To all whmn it may concern.-

Be it known that I, LEONVAN DYOK, a subject of the King of Belgium,residing at Brussels, Belgium, have invented certain new and usefulImprovements in Apparatus for Supplying Combustible Liquid UnderPressure to the Burners of Lamps or Heating Apparatus, (for which I haveobtained patents in Belgium, No. 129,671, dated July 24, 1897, and

No. 130,567, dated September 8, 1897, and in Great Britain, No. 27,233,dated November 20, 1897,) of which the following is a specification,reference being had to the accompanying drawing.

This invention relates tolamps; and it includes certain peculiarfeatures hereinafter described and claimed.

The drawing shows the improved lamp in vertical central sectionalelevation.

The arrangement shown is particularly applicable to all kinds ofsuspension lights or lamps, such as lyre-shaped lamps, also tostreet-lamps and generally to every description of illuminatingapparatus of that class. By describing merely as an example a lyreshapedarrangement such as is frequently used in apartments fitted withapparatus in accordance with this invention a sufflciently clear idea ofthe principle embodied in the device will be given.

Referring to the drawing, a designates the liquid-fuel reservoir, and bthe screw-plug employed to close the filling-orifice of, the same, thejoint being made perfectly air- 5 tight.

0 is the supply-tube, through which the liquid fuel is forced to theburner, which is of the gasifying type and which may be of any suitableconstruction.

71. is an upper air-tight secondary reservoir to which the liquid fuelpoured into the primary reservoir a. may rise under adequate pressurethrough the pipe g.

f is a pipe bent toward the dome of the primary reservoir a and formingan extension of one arm of a lyre, which leads to a close air-tightchamber Z, the other arm of the lyrebeing formed by the pipe g. Thelower end of the pipe f is above the lower ends of the pipes d and e.

m is a pointed screw-tap, by operating which the pipe f and chamber Zmay be connected with or disconnected from the atmos phere. The chamberZ is air-tight and may contain either air only or, preferably, air andminute particles of charcoal, which when used serve to increase theeffective capacity of the space in which they are placed, for it is wellknown that charcoal absorbs seven or eight times its volume ofatmospheric air, which it liberates again, however, in proportion as itstemperature rises and reabsorbs once more as it cools down. Theemployment of charcoal thuslrenders the apparatus highly serviceable byenabling the chamber Z to be of a convenient dimension while beingsufiiciently powerful in its action.

The operation of the device is extremely simple. During the initialheating of the burner by means of alcohol or any other means after theplug or tap m has first been turned OK the air in the charcoal isliberated and expands under the influence of the heat radiating from thelamp-chimney. It exercises a rapidly-increasing pressure upon the fluidin the primary reservoir (1, which accordingly rises both through thetube a into the burner d and if the pressure be excessive also throughthe tube a into the secondary reservoir It. By the time the fluidreaches the burner it becomes converted into vapor,

(or gas,) ignites, and from that moment as sumes the task of continuingto heat or maintaining the temperature of the chamber Z. Presently thereis restored, as it were, an equilibrium of temperatures as regards thesaid chamber--viz., between the heat gained by it and the heat it losesby radiation. At this juncture the liquid fuel ceases to ascend to thesecondary reservoir h, and the apparatus continues to work under theconstant pressure supplied by the column raised as long as there is anyliquid left in said secondary reservoir. If the flame has to beextinguished before all this liquid has been consumed, it is onlynecessary to operate the pointed screw-tap m. The air will then escapethrough the narrow orifice o, the liquid contained in the reservoir Itwill redescend into the reservoir a, the flame will go out, the

chamber Z will cool down, the charcoal will reabsorb air through theorifice 0, which has remained open, and eventually the apparatus isready to be kindled anew.

Having described the invention, what I claim is-- 1. In a lamp forburning liquid fuel, the combination of a primary liquid-fuel reservoir,a burner located over the reservoir having a pipe entering saidreservoir, an airtight chamber over the burner, a pipe connecting theliquid-fuel reservoir with said chamber a secondary reservoir locatedabove said first-mentioned reservoir and also above said chamber, and apipe connected with the secondary reservoir and leading into the primaryreservoir and the lower end of the same a being below the lower end ofthe secondmentioned pipe.

2. In a lamp for burning liquid fuel the combination of aprimaryliquid-fuel reseresasi Voir, a secondary reservoir located above theother one, a pipe connected with the secondary reservoir and leadinginto the primary reservoir, a burner having a depending pipe leadinginto the primary reservoir and the lower end of the same being below thelower end of the first-mentioned pipe, a pipe projecting into theprimary reservoir and extending upward therefrom and having anairorifice, a plug for controlling said orifice, and a chambercommunicating with said lastmentioned pipe, and located in vertical linewith and above the burner and between said burner and secondaryreservoir.

In testimony whereof I have hereunto set my hand this 14th day ofDecember, 1897.

LEON VAN DYOK.

Witn esses Aneusrn DEBEUSTEN, CHARLES RENOKE.

